Re: Database Design and Modelling

(*please* don't post in HTML ! fix your news reader)

Vincent> There are now several extensions to the Chen's original ER proposal.
Vincent> <br>For instance, you can now have inheritance (Teorey, Yang and Fry),
Vincent> reference attributes,
Vincent> <br>cardinalities, complex constraints, ...

In other words, it's nearly UML, now ;-) Seriously, UML seems now to be the main thing (as in 'momentum'). That's not a value judgement, that's just an observation. Use whatever works for you, and for which your tools provide the right support.

BTW, your hyperlinks, referring to french material, are less than useful for some of us; http://www.info.fundp.ac.be/~dbm/informations.html seems to be a better starting point.

                                                                      Philip

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Philip Lijnzaad, lijnzaad_at_ebi.ac.uk | European Bioinformatics Institute,rm A2-24


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